STM32F302XD Datasheet, PDF (126/168 Pages) STMicroelectronics – CRC calculation unit

Electrical characteristics
STM32F302xD STM32F302xE
USB characteristics
Table 76. USB startup time
Symbol
Parameter
Max
t_STARTUP(1)
USB transceiver startup time
1
1. Guaranteed by design, not tested in production.
Symbol
Table 77. USB DC electrical characteristics
Parameter
Conditions
Min.⁽¹⁾
Unit
µs
Max.⁽¹⁾ Unit
Input levels
V_DD USB operating voltage⁽²⁾
-
3.0⁽³⁾
3.6
V
V_DI(4) Differential input sensitivity
I(USB_DP, USB_DM)
0.2
-
V_CM(4) Differential common mode range
Includes V_DI range
0.8
2.5
V
V_SE(4) Single ended receiver threshold
-
1.3
2.0
Output levels
V_OL Static output level low
V_OH Static output level high
R_L of 1.5 kΩ to 3.6 V⁽⁵⁾
-
R_L of 15 kΩ to V_SS(5)
2.8
0.3
V
3.6
1. All the voltages are measured from the local ground potential.
2. To be compliant with the USB 2.0 full-speed electrical specification, the USB_DP (D+) pin should be pulled
up with a 1.5 kΩ resistor to a 3.0-to-3.6 V voltage range.
3. The STM32F302xD/E USB functionality is ensured down to 2.7 V but not the full USB electrical
characteristics which are degraded in the 2.7-to-3.0 V V_DD voltage range.
4. Guaranteed by design, not tested in production.
5. R_L is the load connected on the USB drivers.
Figure 47. USB timings: definition of data signal rise and fall time
'LIIHUHQWLDO
GDWDOLQHV
9&56
&URVVRYHU
SRLQWV
966
WI
WU
Symbol
Table 78. USB: full-speed electrical characteristics⁽¹⁾
Parameter
Conditions
Min
Typ
Driver characteristics
t_r
Rise time⁽²⁾
t_f
Fall time⁽²⁾
C_L = 50 pF
C_L = 50 pF
4
-
4
-
DLE
Max
Unit
20
ns
20
ns
126/168
DocID026900 Rev 4